EarthQuakeUpdater/app/src/main/java/com/example/earthquakeupdater/EarthquakeAdapter.java
package com.example.earthquakeupdater;
import android.content.Context;
import android.graphics.drawable.GradientDrawable;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.TextView;

import androidx.core.content.ContextCompat;

import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;


//  An EarthquakeAdapter knows how to create a list item layout for each earthquake
//  in the data source a list of Earthquake objects.
//  These list item layouts will be provided to an adapter view like ListView
//  to be displayed to the user.

public class EarthquakeAdapter extends ArrayAdapter<EarthQuake> {


    private static final String LOCATION_SEPARATOR = " of ";

    public EarthquakeAdapter(Context context, List<EarthQuake> earthquakes) {
        super(context, 0, earthquakes);
    }
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        // Check if there is an existing list item view (called convertView) that we can reuse,
        // otherwise, if convertView is null, then inflate a new list item layout.
        View listItemView = convertView;
        if (listItemView == null) {
            listItemView = LayoutInflater.from(getContext()).inflate(
                    R.layout.earthquake_list_item, parent, false);
        }

        // Find the earthquake at the given position in the list of earthquakes
        EarthQuake currentEarthquake = getItem(position);

        // Find the TextView with view ID magnitude
        TextView magnitudeView = (TextView) listItemView.findViewById(R.id.magnitude);
        // Format the magnitude to show 1 decimal place
        String formattedMagnitude = formatMagnitude(currentEarthquake.getMagnitude());
        // Display the magnitude of the current earthquake in that TextView
        magnitudeView.setText(formattedMagnitude);

        GradientDrawable magnitudeCircle = (GradientDrawable) magnitudeView.getBackground();

        int magnitudeColor = getMagnitudeColor(currentEarthquake.getMagnitude());

        magnitudeCircle.setColor(magnitudeColor);

        String originalLocation = currentEarthquake.getLocation();

        String primaryLocation;
        String locationOffset;

        // Check whether the originalLocation string contains the " of " text
        if (originalLocation.contains(LOCATION_SEPARATOR)) {

            String[] parts = originalLocation.split(LOCATION_SEPARATOR);

            locationOffset = parts[0] + LOCATION_SEPARATOR;

            primaryLocation = parts[1];
        } else {

            locationOffset = getContext().getString(R.string.near_the);

            primaryLocation = originalLocation;
        }

        TextView primaryLocationView = (TextView) listItemView.findViewById(R.id.primary_location);

        primaryLocationView.setText(primaryLocation);

        TextView locationOffsetView = (TextView) listItemView.findViewById(R.id.location_offset);

        locationOffsetView.setText(locationOffset);

        Date dateObject = new Date(currentEarthquake.getTimeInMilliseconds());

        TextView dateView = (TextView) listItemView.findViewById(R.id.date);

        String formattedDate = formatDate(dateObject);

        dateView.setText(formattedDate);


        TextView timeView = (TextView) listItemView.findViewById(R.id.time);

        String formattedTime = formatTime(dateObject);

        timeView.setText(formattedTime);

        return listItemView;
    }

    private int getMagnitudeColor(double magnitude) {
        int magnitudeColorResourceId;
        int magnitudeFloor = (int) Math.floor(magnitude);
        switch (magnitudeFloor) {
            case 0:
            case 1:
                magnitudeColorResourceId = R.color.magnitude1;
                break;
            case 2:
                magnitudeColorResourceId = R.color.magnitude2;
                break;
            case 3:
                magnitudeColorResourceId = R.color.magnitude3;
                break;
            case 4:
                magnitudeColorResourceId = R.color.magnitude4;
                break;
            case 5:
                magnitudeColorResourceId = R.color.magnitude5;
                break;
            case 6:
                magnitudeColorResourceId = R.color.magnitude6;
                break;
            case 7:
                magnitudeColorResourceId = R.color.magnitude7;
                break;
            case 8:
                magnitudeColorResourceId = R.color.magnitude8;
                break;
            case 9:
                magnitudeColorResourceId = R.color.magnitude9;
                break;
            default:
                magnitudeColorResourceId = R.color.magnitude10plus;
                break;
        }

        return ContextCompat.getColor(getContext(), magnitudeColorResourceId);
    }

    private String formatMagnitude(double magnitude) {
        DecimalFormat magnitudeFormat = new DecimalFormat("0.0");
        return magnitudeFormat.format(magnitude);
    }

    private String formatDate(Date dateObject) {
        SimpleDateFormat dateFormat = new SimpleDateFormat("LLL dd, yyyy");
        return dateFormat.format(dateObject);
    }

    private String formatTime(Date dateObject) {
        SimpleDateFormat timeFormat = new SimpleDateFormat("h:mm a");
        return timeFormat.format(dateObject);
    }
}